The number of bugs discovered is directly proportional to the quality of the software product that means the more the number of bugs identified, the better the quality of software. But is it possible for a tester to guarantee that there are no more bugs in the software? Not at all since no software/program is tested completely for the tester to make such tall claims.

There are four main reasons as to why software/program cannot be tested completely and they are:

• Possibilities of the number of inputs and outputs are significantly large.

• Number of paths through the software is also very large.

• Software specification is subjective i.e. it depends upon the tester to discern whether it’s really a bug or not.

For instance, consider a tester is assigned the task of testing the calendar in mobile phones. It’ll be practically impossible for him to test each and every date so as to ensure that all the functionalities are working properly.

So what the tester needs to do is to hit that optimal amount of testing so that they don’t have to test too much at the same time reducing the possibility of missed bugs to a great extent. And if they have a good test management system to rely on, then software test management will be considerably easy.